• Powder coated bar stock steel tamper proof grille, with extruded Aluminum frame and 16 Gauge housing.

• In-Built double pole tamper proof thermostat with a 40°-110°F temperature range & positive off; 3 phase heaters have 3 pole thermostat for positive off position.

• Manual reset thermal limit switch.

• Corrosion resistant steel tubular element with brazed steel fins.

• Permanently lubricated, unit bearing, shaded pole motor with impedance protection.

• MARKEL691918 3450 Wall Box is NOT included

• Propeller type fan blade:

1400 RPM motor; 245 CFM

• Factory installed options:

- contactors (3420 & 3450 series)

- circuit breakers (3450 series)

- control transformers (3450 series)